必修3Unit4 Astronomy语言归纳
第一章 重点词汇
第一节 动词
The dust began to slowly combine into a ball moving around the sun. (B3U4天文)
As the earth cooled down, water began to appear on its surface. (B3U4天文)
That made it possible for life to begin to develop. (B3U4天文)
These plants multiplied and filled the first oceans and seas with oxygen. This encouraged the development of early shellfish and all sorts of fish. (B3U4天文)
It seemed as if the dust would multiply and become a new planet. (B3U4天文)
As the rocket rose slowly into the air we began to feel the pull of the earth (B3U4天文)
When we got there, I wanted to explore immediately. (B3U4天文)
I wonder why the universe exists. (B3U4天文)
The discoveries have revolutionized the way we think. (B3U4天文)

第二节 动词或名词

第三节 名词
Carbon dioxide, oxygen, nitrogen and other gases were to make the earth’s atmosphere. (B3U4天文)
The earth was different because of the arrival of small plants growing in the water on its surface
(B3U4天文)
第四节 形容词
a cloud of energetic dust (B3U4天文)
It allowed the earth to dissolve harmful gases into oceans and seas. (B3U4天文)
Last month I was lucky enough to have a chance to make a trip into space (B3U4天文)
Our image of the universe today is full of strange sounding ideas, and remarkable truths. (B3U4天文)
And our galaxy in a universe that is infinite and expanding  (B3U4天文)

第五节 副词
Gradually the weight lessened and I was able to talk to him. (B3U4天文)
The spaceship moved sideways from the “black hole. (B3U4天文)

第二章 短语搭配
第一节 动词性
I. Be动词短语
We were caught by the gravity of a “black hole”. (B3U4天文)
Then we were off. (B3U4天文)
II. 动词+名词
Reptiles produced young generally by laying eggs. (B3U4天文)
Some huge animals developed. They laid eggs too. (B3U4天文)
Man developed new methods of growing food, hunting and moving around. (B3U4天文)
The surface of the moon produced a lot of dust. (B3U4天文)
The spaceship began to increase its speed (B3U4天文)
Scientist spends two years training to mend the space telescope (B3U4天文)
So he was trained to do repairs on spaceships and telescopes. (B3U4天文)
After a while I got the hang of it and we began to enjoy ourselves. (B3U4天文)

III. 动词+名词+介词
Taking carbon dioxide from the atmosphere and filling the air with oxygen helped life to develop. (B3U4天文)
Human beings are not taking care of the earth very well. (B3U4天文)
Carbon dioxide prevents heat from escaping from the earth into space. (B3U4天文)
The spaceship warned me to be ready as we were approaching the “black hole”. (B3U4天文)
I tried to make sense of what I see. (B3U4天文)
We hope to have a complete picture of the universe we live in. (B3U4天文)

IV. 动词+介词/副/形+名词
Small clever animals appeared and spread all over the earth. (B3U4天文)
Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. (B3U4天文)
At last we slowed almost to a stop and we were able to look around us. (B3U4天文)
He explained to me that the force of gravity would change three times on our journey (B3U4天文)
The story of how we arrive at this picture is the story of learning to understand what we see. (B3U4天文)

V. 动词词组
I cheered up immediately and (B3U4天文)
Just then the lights on our spaceship went out (B3U4天文)

第二节 名词性
I. 名词词串
Many millions of years later the first green plants began to appear on land. They became the most important animals on the earth for millions of years. (B3U4天文)
Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. (B3U4天文)
A visit to the moon (B3U4天文)
In less than a hundred years, we have found a new way to think of ourselves. (B3U4天文)
I have tired to find scientific answers to them. (B3U4天文)

II. 介词+名词搭配
The earth exploded loudly with fire and rock, which in time to produce the water vapour. (B3U4天文)
When the plants grew into forests, reptiles appeared for the first time. (B3U4天文)
We watched in shock and amazement as a large sun suddenly disappeared into the hole. (B3U4天文)
The answers have always seemed well beyond our reach until now. (B3U4天文)

III. 复合介词或副词
Amphibians were able to live on and as well as in the sea. (B3U4天文)
Mammals produced their young from within their bodies. (B3U4天文)

第三章 常见句型
第一节 基本结构
Walking does need a bit of practice now that gravity has changed. (B3U4天文)

When I tried to step forward I found I was carried twice as far as on the earth and fell over. (B3U4天文)The gravity of the moon is not as strong a pull as the earth's. (B3U4天文)Leaving the moon's gravity was not as painful as leaving the earth's. (B3U4天文)

The earth may become too hot for the lives on it. (B3U4天文) We are too far from the earth now to feel its pull, so we feel as if there is no gravity at all. (B3U4天文)

第二节 其他句式
As time went by they covered the earth. (B3U4天文)
Why is the universe the way it is? (B3U4天文)

第三节 上佳表达
He did a good job and the telescope works fine. (B3U4天文)

第四章 知识点滴
第一节 高频知识
一、形容词特殊用法
My mouth went dry and I closed my eyes. (B3U4天文)
二、情感形容词的用法
He was very disappointed. (B3U4天文)
But returning to the earth was very frightening. (B3U4天文)
We watched, amazed as fire broke out on the outside of the spaceship as the earth's gravity increased. (B3U4天文)
“That was very exhausting but very exciting too," I exclaimed. (B3U4天文)

What it was to become was a mystery (B3U4天文)
This is how the earth began to show its special qualities (B3U4天文).
The problem was that the earth became violent. (B3U4天文)
What scientists think is that the earth was different because of the arrival of small plants growing in the water on its surface. (B3U4天文)
It was not clear whether the solid shape was to last or not. (B3U4天文)
The pull of the earth is what we call gravity. (B3U4天文)

What scientists think is that the earth was different because of the arrival of small plants growing in the water on its surface. (B3U4天文)
The earth is different from other planets going round the sun. (B3U4天文)
There seemed to be a large circle of lights going round an empty space. (B3U4天文)
That empty hole is like a mouth always needing to be fed. (B3U4天文)
The lights are large stars being slowly sucked into it. (B3U4天文)
Huge questions remain to be answered (B3U4天文)
One evening he saw a huge comet explode as it hit the moon. (B3U4天文)
He was lucky enough to be chosen to repair the Hubble space telescope. (B3U4天文)
When we get closer to the moon, we shall feel its gravity pulling us. (B3U4天文)
I floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger. (B3U4天文)
We now find ourselves moving around an average-sized sun (B3U4天文)

第二节 零散知识
We had discovered something new about “black holes”. (B3U4天文)